Correlation of skeletal age by Greulich-Pyle atlas, physiological age by body development index, and dental age by London Atlas and modified Demirjian’s technique in children and adolescents of an Eastern Indian population

Egyptian Journal of Forensic Sciences

Table 3 Comparison of mean age estimated by various methods of dental, BDI, and skeletal age estimation

Method (mean ± SD)	Comparison	Mean ± SD	Mean difference	t value	95% CI	p value
MDA 14.25 ± 2.78	GP skeletal	14.38 ± 2.4	− 0.12	− 0.94	− 0.38 to 0.14	0.4
	LAM	14.56 ± 2.71	− 0.31	− 2.64	− 0.54 to − 0.08	0.009
	BDI	14.46 ± 3.31	− 0.19	− 0.96	− 0.61 to 0.21	0.3
GP skeletal 14.38 ± 2.4	LAM	14.56 ± 2.71	− 0.18	− 1.4	− 0.45 to 0.07	0.15
GP skeletal 14.38 ± 2.4	BDI	14.46 ± 3.31	− 0.07	− 0.4	− 0.44 to 0.29	0.7
LAM 14.56 ± 2.71	BDI	14.46 ± 3.31	0.11	0.54	− 0.29 to 0.52	0.6

SD standard deviation, SE standard error, CI class interval, MDA Acharya’s modified Demirjian method, GP Greulich-Pyle, LAM London Atlas method, BDI body development index